METER / GAUGE SYSTEM, Diagnostic DTC:B150A

DTC Code DTC Name
B150A Lost Communication with HMI-LAN

DESCRIPTION

The combination meter assembly receives a text data signal from the radio and display receiver assembly via local bus communication.

Based on this signal, audio and visual system or navigation system information is displayed on the multi-information display.

This DTC is stored when the combination meter assembly cannot receive the signal.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note
B150A Lost Communication with HMI-LAN After the combination meter assembly receives a registration information signal, which is sent by the radio and display receiver assembly when the ignition switch is ACC, 1 or more times, the combination meter assembly cannot receive the signal for 30 seconds or more.

  • Harness or connector

  • Radio and display receiver assembly

  • Combination meter assembly

 DTC stored for Multi-information Display (Color Type) with Radio and Display Receiver Assembly

WIRING DIAGRAM


  2. B004334E51
    *a Radio and Display Receiver Assembly
    *b Combination Meter Assembly
    *c Local Bus Communication Line

PROCEDURE


  1. CONFIRM VEHICLE TYPE


    1. Choose the model to be inspected.

      Result
      Result Proceed to
      w/ Navigation System A
      w/o Navigation System B

    B

    CHECK FOR DTC Click here

    A

  2. CHECK FOR DTC


    1. Check if navigation system DTCs are output.

      Click here


      Body Electrical > Navigation System > Trouble Codes
      Result
      Result Proceed to
      Navigation system DTCs are not output. A
      Navigation system DTCs are output. B

    B

    GO TO NAVIGATION SYSTEM Click here

    A

  3. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - RADIO AND DISPLAY RECEIVER ASSEMBLY)


    1. Disconnect the E46 combination meter assembly connector.

    2. Disconnect the E125 radio and display receiver assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      E46-37 (MSCL) - E125-4 (CNL1) Always Below 1 Ω
      E46-36 (MSCH) - E125-3 (CNH1) Always Below 1 Ω
      E46-37 (MSCL) - Body ground Always 10 kΩ or higher
      E46-36 (MSCH) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. REPLACE COMBINATION METER ASSEMBLY


    1. Replace the combination meter assembly with a new or known good one.

      Click here

    2. Turn the ignition switch to ON and wait 30 seconds.

      Note

      A maximum of 30 seconds is required to send/receive the registration information between the combination meter assembly and radio and display receiver assembly.

    3. Operate the steering pad switch assembly and check that the audio tab illuminates.

    4. Check for DTCs.

      Click here


      Body Electrical > Combination Meter > Trouble Codes
      Result
      Result Proceed to
      The audio tab illuminates and DTC B150A is not output. A
      The audio tab does not illuminate and DTC B150A is output. B

    A

    END

    B

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

  5. CHECK FOR DTC


    1. Check if audio and visual system DTCs are output.

      Click here


      Body Electrical > Navigation System > Trouble Codes
      Result
      Result Proceed to
      Audio and visual system DTCs are not output. A
      Audio and visual system DTCs are output. B

    A

    GO TO STEP 3 Click here

    B

    GO TO AUDIO AND VISUAL SYSTEM Click here